Hello. Thank you for letting me know. Before you do anything, I have put together a guide to hopefully back up the contents of the add-on. Find it here: https://gist.github.com/semanticdata/0b844b13b6db5e521ed89bf6b188ea3a

I have isolated the issue and have pushed a new version with the fix. After you back up your data, please update your extensions and try again.